signing transparency

Signing transparency combines cryptographic signing with an append-only ledger to make software signing verifiably accountable. Microsoft's preview of Signing Transparency for Azure uses confidential hardware, auditable receipts, countersigned COSE envelopes, and Merkle-based inclusion proofs that anyone can validate independently. This approach addresses modern supply chain security by providing verifiable evidence that a signature was created and recorded. The tag covers discussions about implementing signing transparency in Azure and related cryptographic verification methods.